double head screw spike is a test device for measuring the torsional properties of materials. It can be used to test the torsional properties of various metal and non-metal materials. Torsion testing machine test product classification, torsion testing machine is divided into spring torsion testing machine, wire torsion testing machine and material torsion testing machine. Material double head screw spike is divided into metal material double head screw spike and non-metal material double head screw spike; Material double head screw spike is divided into manual, automatic and microcomputer control two models.

Widely used in welding joints, spring steel, steel wire, wire, wire, cable and other metal non-metallic materials torsion test. Performance parameters such as torsional strength, upper yield strength and lower yield strength can be obtained. double head screw spike is a test machine used to measure the torsion resistance of materials, which can be used for the torsion performance test of various metal materials and non-metal materials. How does the double head screw spike work? There is a basic fixing chuck on the body of the double head screw spike, a section of torsion sample is fixed with two planes and clamping bolts, and the base is equipped with a horizontally moving electric reduction device. The left end is a rotating chuck for clamping the other end of the sample. When the electric accelerator rotates, the movable chuck is driven to rotate, and one end of the sample is rotated against the other end, so that the sample is distorted. The torque acting on the specimen is balanced by a weighing mechanism connected to a fixed chuck, which simultaneously drives the rotation of the loading pointer to indicate the magnitude of the torque. It also drives the plotter's brush to move left and right, and the torque coordinate of this movement is perpendicular to the length of the paper on the recording paper.

The rotating momentum of the movable chuck represents the rotation of one end of the sample with respect to the other end, that is, the torsion Angle. The size of the twist Angle is indicated by the scale on the detachable clamp. At the same time, the Angle signal is input to the plotter through the rotation sensor, which drives the plotter tube to rotate and outputs the recording paper. The angular coordinates are formed in the direction of the length of the recording paper.

In the test process, with the increase of the torsion deformation of the specimen, the torsion moment of the specimen will also change, and the plotter will draw the test curve of the torsion moment and torsion Angle.

That's how the double head screw spike works. The experimental principle of different test performance testing machines is different. Understanding the basic test principle of double head screw spike can test different samples.

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